At dusk one night I watched an object doing loops in the sky. It was the color and shape of a spotlight on the sky. It made no sound. It had a long tail, very like the tail on a kite. Its actions were a hover and then a loop. As it came near I could make out a sort of bump on the top with a row of what looked like windows. It left in a straight line with such speed it was over the horizon in seconds.